# num1 = 666
# num2 = 888
# # num1 = num2
# # num2 = num1
# num1,num2 = num2,num1
# print(num1,num2)

# a = 10
# res = type(a)
# print(res)
# res1 = isinstance(a,int)
# print(res1)
# a = input("请输入第一个整数：")
# b = input("请输入第二个整数：")
# c = str(int(a)+int(b))
# print("您刚刚输入的是"+a+"和"+b+",他们相加是"+c)


for test in "abc":
    print("循环几次由目标决定，目标有几个元素就执行几次")
    print("这次循环变量的值是："+test)